Wondersaurus says: We love this product because it’s simple to build and offers thrilling races with exciting loops and funnels. Kids will enjoy hours of creative fun! Description: Experience the perfect blend of fun and learning with this easy-to-build marble run! Standing over two feet tall, it offers an exciting way to explore physics and engineering concepts. Enjoy endless fun as marbles race through the track, featuring a switcher, two funnels, and a thrilling loop-the-loop. With simple assembly using glue or tape, you can quickly create your model and start racing. The included explanations help you understand the science behind each twist and turn, making it an entertaining and educational activity for everyone. Get ready for a race full of surprises and discovery!